LM3691TL-1.8

Voltage Regulators - DC DC Switching Regulators Overview

The LM3691TL-1.8/NOPB is a synchronous step-down DC-DC converter manufactured by Texas Instruments, formerly National Semiconductor. It delivers a fixed 1.8V output at up to 1A current from an input range of 2.3V to 5.5V. Operating at a 4MHz switching frequency, it utilizes a 6-pin DSBGA (1.5x1.3mm) package. The device supports positive output configuration and functions within a -30°C to 85°C ambient temperature range.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture for enhanced efficiency
• Miniature footprint suitable for space-constrained portable designs
• High switching frequency enables use of small external components

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems utilizing single-cell lithium-ion sources
• Embedded circuits needing stable low-voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation carefully, as Texas Instruments acquired National Semiconductor; datasheets may reference either entity. Confirm the specific suffix indicates lead-free composition and environmental compliance. Ensure the ordering part number matches the required fixed output voltage variant to avoid functional mismatches in design implementation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for converting higher battery voltages to lower logic levels. The high switching frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider thermal dissipation requirements given the small surface mount package size under full load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the LM3691 family of high-accuracy, miniature step-down converters designed specifically for portable applications. The series offers various fixed output voltage options to suit different system requirements while maintaining a consistent physical footprint and electrical topology across variants.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

• LM3691TLX-1.8/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

Is the LM3691TL-1.8/NOPB currently in production?

Yes, the LM3691TL-1.8/NOPB variant is listed as active and in production.

What is the maximum output current capability of this device?

The device provides a maximum continuous output current of 1A.